By uploading the volumes of books edited by Professor F Max Muller, your site has done a yeomen service to the lovers of these books. Certainly this step will encourage researches in the neglected areas of linguistics in general, particularly philology, etymology etc.
'Sacred Books of the East' listed on page 35 of index vol 4 is missing. Remaining 49 vols are only available. I shall be grateful, if vol.4
could also be uploaded for the benefit of the intended users.
A Shanmukha Padayatchiar